Perhaps you should try some spelling variations:
johannes fischer » johanna fischer, johannes fechner, johannes liesche
johannes pfister » johanne foster, johannes dieter, johannes schuster
johannes koster » johanne foster, johannes koder, johannes kepler
johan fischer » johanna fischer, johann fischart, johan richter

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((johannes fischer) OR (((johannes pfister) OR (johannes koster))))) OR (johan fischer)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((johannes fischer) or (((johannes pfister) OR (johannes koster))))) or (johan fischer))".
• Adding a wildcard symbol may retrieve word variants: ((((johannes fischer) or (((johannes pfister) OR (johannes koster))))) or (johan fischer))*.